408 Index. 



Ozone, account of, and the method of determining the amount of, 

 in the atmosphere, 171. 



Parachutes, their use in mines, 185. 



Patents, list of, granted for Scotland from 22d March to 22d June 



1850, 189— From 22d June to 22d September, 401. 

 Petromyzontidse, observations on, 242. 

 Phillips, Professor, on the effects produced by lightning on a tree 



near Edinburgh, 341 — On Isoclinal Lines in Yorkshire, 362. 

 Pilla, Leopold, the geologist, biographical sketch of, by M. H. 



Coquand, 68. 

 Playfair, Dr L., on the condensation of volume in highly hydrated 



minerals, 329. 

 Primitive races of Scotland, noticed, by M. D. Wilson, 318. 



Kain drops, fossil, observations on, 246. 

 River terraces of the Connecticut Valley, described, 176. 

 Robinson, Dr, on resigning the Presidency of the British Association, 

 276. 



Salmon tribe, their classification, and geographical distribution con- 

 sidered, 144. 



Scoresby, Dr Wm., on Atlantic waves, their magnitude, velocity, 

 and phenomena, 296, 



Sedgwick, Professor, on the Palaeozoic rocks of the south of Scot- 

 land, 369 — his delivery of a vote of thanks to the University of 

 Edinburgh, 375. 



Self-imposed taxation of the working classes in the United Kingdom, 

 particularly considered, by G. R. Porter, Esq., 319. 



Serpent of the Bible, observations on, 239. 



Simpson, Professor, on the reproduction of limbs after amputation, 

 373. 



Smyth, Professor, on cometary physics, 363. 



Sorby, H. C, on the Trimorphism of carbon, 307. 



Steamboat, New World, noticed, 184. 



Sugar, a new process, followed in its manufacture from sugar-cane, 

 in the south of Spain, by Dr Scoffern, 346. 



Thanks of the British Association to the following public bodies :• — 

 To the Lord Provest and Magistrates of Edinburgh, 374 — 

 The University of Edinburgh, 375 — The Colleges of the 

 Physicians and Surgeons, 37.9 — The Royal Society of Edin- 

 burgh, &c., 379 — The Commissioners of Northern Lights, 380. 



Water thermometer, noticed, 173. 



Williams, Dr T., his notes on Crustacea, 316. 



Wilson, George, M.D., on the presence of fluorine in blood and milk, 

 227 — On the extent to which fluoride of calcium is soluble in 

 water at 60° F., 230 — On the influence of sun-light over the 

 action of the dry gases on organic colours, 330 — Particulars in 

 the Life of Dr Black, 306. 



Wolley, J., Esq., on the bir^la^htliw^^J^oe Islands, 371. 



